Skyrmionic excitons

Details Skyrmionic excitons Skyrmionic excitons

1997-07-04

arxiv.org/abs/cond-mat/9707045v2

Phys. Rev. B 56, R10052 (1997)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, RevTex, 2 PostScript figures. Replaced with version to appear in Phys. Rev. B Rapid Communications. Short discussion

Scientific paper

10.1103/PhysRevB.56.R10052

We investigate the properties of a Skyrmionic exciton consisting of a negatively charged Skyrmion bound to a mobile valence hole. A variational wave function is constructed which has the generalized total momentum P as a good quantum number. It is shown that the Skyrmionic exciton can have a larger binding energy than an ordinary magnetoexciton and should therefore dominate the photoluminescence spectrum in high-mobility quantum wells and heterojunctions where the electron-hole separation exceeds a critical value. The dispersion relation for the Skyrmionic exciton is discussed.

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